I always considered "ETA movement" and "superlume" to be nouns not adjectives.
This means if I said a watch had "superlume" it would have this substance applied to it (noun). Not that the watch had "SUPER LUME !!!!!!!!!!!!!" (adjective).
Likewise, I thought ETA had something to do with this company (noun). Not an adjective.
This would make an interesting academic study. "Converting nouns into adjectives for fun and profit!"
edited for typo.